/* * JasperReports - Free Java Reporting Library. * Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved. * http://www.jaspersoft.com * * Unless you have purchased a commercial license agreement from Jaspersoft, * the following license terms apply: * * This program is part of JasperReports. * * JasperReports is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * JasperReports is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with JasperReports. If not, see <http://www.gnu.org/licenses/>. */ package net.sf.jasperreports.charts; import net.sf.jasperreports.engine.JRChartDataset; import net.sf.jasperreports.engine.JRExpression; /** * This class represents a dataset that consists of a single * value. It is used by Meter and Thermometer charts, which * plot a single value against a range. * * @author Barry Klawans (bklawans@users.sourceforge.net) * @version $Id: JRValueDataset.java 3032 2009-08-27 11:32:28Z teodord $ */ public interface JRValueDataset extends JRChartDataset { /** * Returns the expression that indicates the value held * by this dataset. * * @return the expression that indicates the value held by * this dataset */ public JRExpression getValueExpression(); }